Finding the Fourth Proportional to 84,702.75, 127,056.76 and 31,407.99
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Solution
The fourth proportional to 84,702.75, 127,056.76 and 31,407.99 is: 47,112.96
Step by Step Solution
- Step 1: Write the proportion equation
84,702.75 : 127,056.76 = 31,407.99 : x - Step 2: Convert to fraction form
84,702.75/127,056.76 = 31,407.99/x - Step 3: Cross multiply
84,702.75x = 127,056.76 × 31,407.99 - Step 4: Simplify right side
84,702.75x = 3,990,597,447.51 - Step 5: Solve for x
x = 3,990,597,447.51/84,702.75 - Step 6: Final answer
x = 47,112.96
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.